Posted onJune 4, 2013|Comments Off on Why ice cores from glaciers cannot be used to reconstruct atmospheric carbon dioxide of the past

An informative post explaining how carbon dioxide and other gases trapped in ice moves upward as a glacier moves:

“The upshot of all this is that glacier ice cannot be reasonably used to analyze carbon dioxide abundance in the atmosphere over time as the upper layers of ice will always have more carbon dioxide than the lower layers, regardless of the actual atmospheric levels of carbon dioxide.”